[Rd] r-devel fails tests for parallel

[Prof Brian Ripley]

Seems your ancient OS (that compiler has a 6-year-old copyright date) 
has a broken implementation of affinity with CPU_ZERO but not CPU_COUNT.

I've added some checks which should catch this.

On 17/05/2012 13:52, Kasper Daniel Hansen wrote:
> I have been building R-devel daily for years.  In the last week or so,
> R-devel has failed make check with the error in
>    tests/Examples/parallel-Ex.R
>
> The specific error is
>> pkgname<- "parallel"
>> source(file.path(R.home("share"), "R", "examples-header.R"))
>> options(warn = 1)
>> library('parallel')
> Error in dyn.load(file, DLLpath = DLLpath, ...) :
>    unable to load shared object
> '/hpscc/usr/local/gcc-4.1.2/build/R/R-devel-build/library/parallel/libs/parallel.so':
>    /hpscc/usr/local/gcc-4.1.2/build/R/R-devel-build/library/parallel/libs/parallel.so:
> undefined symbol: CPU_COUNT
> Error: package/namespace load failed for ‘parallel’
> Execution halted
>
> I am building on Red Hat Enterprise Linux version 4, using

Hmm, it says .el5: RHEL5 is ancient but RHEL4 is pre-historic!

> # gcc --version
> gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-51)
> Copyright (C) 2006 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>
> The specifics of the distro is
> # cat /proc/version
> Linux version 2.6.18-274.12.1.el5
> (mockbuild at x86-001.build.bos.redhat.com) (gcc version 4.1.2 20080704
> (Red Hat 4.1.2-51)) #1 SMP Tue Nov 8 21:37:35 EST 2011
>
> I am happy to provide any additional information
>
> Best,
> Kasper
>
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> https://stat.ethz.ch/mailman/listinfo/r-devel


-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595